Improvement in attachments for vertical steam-boilers



c. M. MILLER.

Patented Aug. 28,1877;

` f INVENTOR i ATToRNl-:YsA

MPEERS. PHOTO-H HOGRAFHEE WASHINGTON, D. C,

IATTAGHMEN'TS FOR VERTICAL STEAM-BOILERS'.

YUNrrnn 4STATES,

QATENT Grtner..I

CASSIUS M. MILLER, OF'PHELPS, N. Y., ASSIGNOR' TO EDGAR-E. MILLER.

IMPROVEMENT IN ATTACHMENTS FORVERI'I'ICAI. STEAM-BlLERS.

Specication forming part of Letters Patent No. 194,527, dated August 28, 1877; application filed August 16, 1877.

To all whom 'it mag/concern:

Be it known that I, CAssIUs M. MILLER, of Phelps, in the county of Ontario and State of New York, have invented certain new and useful Improvements in Attachments for Vertical Steam-Boilers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a vertical section of a vertical tubular boiler, with smoke chamber and pipe attached and Fig. 2, an inverted view of the conical smokechamber, showing the draft and heat regulator.

My invention has for its object the complete regulation, equalization, distribution, and control of the heat throughout and above the top of the boiler, as well as the arrest of sparks from the furnace; and to this end it consists in the arrangement within the dome or conical smoke-chamber of an annular dish-shaped disk provided with ports, and the combination therewith of a movable disk fitted thereto, provided with corresponding ports, adapted to leave an annular draft-space, c, over their circumference, which, in connection with the center ports, effects the objects stated by the adjustment of the movable disk, operated from without by a curved rod passing through a hole or opening in the side of the dome, and in the combination with the conical smokechamberor dome, and the annular space formed therein by the perforated disk of a iiue projecting or extending down into' the same so as to arrest the passage of sparks or other solid matter, and passing over the circumference of the disk.

A represents a boiler, arranged, as usual, above a suitable furnace or tire-box, E, upon the tcp of which boiler is secured in any convenient manner the conical smoke-chamberB. Within this chamber B is ixed a disk, C, provided with ports m as shown, an annular space being left around this disk suiiicient for ordinary draft. U represents a movable disk, also provided with ports corresponding with those on disk C, fitted to oscillate around a pivot, Z, and having connected therewith a bent or curved rod, d, extending through the so as to cause a perfectly equal combustion over the whole surface of the grate and the passage of the products of combustion mostly through the outer iiues or tubes, or equally through them all at the will of the operator, and by this means and the reflection from the disks upon the top of the boiler the heat may be kept uniform throughout all parts of the boiler.

It will be observed that there is nowhere a direct or straight passage for the smoke and sparks. The sparks must, therefore, be thrown outward over the dished edge of thedisk against the inclined walls of the chamber B, and that part thereof which may remain is carried along until arrested by the downward-projecting line D. It will also be observed that the disk C', by means of the curved rod d, can be readily manipulated, while only a small aperture is required through the side of the smokechamber for the passage of said rod.

Having thus fully described my invention,

what I claim as new, and desire to secure byV Letters Patent, is-

l. The combination, in a vertical tubular boiler, of the fixed and'movable perforated dish-shaped disks C and C', with the boilertlues and the draft annular space o, formed by the dish-shaped disks and the inner wall of the conical chamber B, whereby the products of combustion may pass centrally through the disks or over their circumference, or both, di-

rect from the lues, and thereby obtain complete regulation, equalization, distribution, and control of the heat through the iiues and above the top of the boiler, as herein set forth.

2. The fixed and movable disks G and C',

having their lowest central point in near relation to the top fluesheet, and increasing the splce between-'the disks alud Hue-sheet toward jecting smoke-due D,and the conicelrchem ber' the circumferen'ce Vfof said disks, and at the B, substantiallyasand for the -pu-rpose stated.

flue-space c, formed thereby, as described, 4. The combination, with a circular oscilwhereby the products of combustion are lating valve or heat-equalizer, of a curved opcaused to pass mostly through the outer flue- @rating-rod, substantially as and for the purtubes, l'orequelly through them aILunder a pose specified.

direct draft, as described. UASSIUS M. MILLER.

3. ,The combination, with the heat-regulat- Witnesses: ing disks O and C', `amd circumferential iue- DANIEL TOWNER,

space c formed thereby, of the inwardly-pro- M. E. BOOTH. 

